• 455 Martinson, Los Angeles
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  • Pocket Octal/Hexadecimal calculator for computer programmers
  • Mystery Dennert & Pape Desktop “Quadrat-Rechenscheiber”
  • Post 1824 Dring & Fage Gauging Rule
  • Darnley’s Rotable Lightning Calculator/Pencil Case
  • Lawrence Antenna (classified in WWII)
  • Makeba Kombinator pencil & slide rule
  • Rare Carbic-made Fischer Calculator
  • For calculating in Twaddells !!
  • PTT rule for Cable Radio (Signal Loss/dB)
  • Smallest drum (≈ 2.4m) made by LOGA

My stories ....

A dream to write a book for children has yet to happen but as the passion for my hobby took hold so did writing about slide rules - at least my often light-hearted take on various topics.

Mostly I publish my articles in the:

  • US: Journal of the Oughtred Society (JOS)
  • UK: Slide Rule Gazette and Skid Stick newsletter
  • NL: Mededeling en Informatie voor verzamelaars van historische Rekeninstrumenten (MIR) newsletter
  • DE: Rechenschieber-Brief electronic newsletter
  • xx: Proceedings of International Meetings (IMs)

All the articles, the most recent first, are listed with a short summary and a PDF download option
(n.b. some are updated/extended versions of the original article).

Use the “Browse all papers” option (most are in English but the odd one is in Dutch) or the SEARCH BY KEYWORD to find topics of interest.

Please email me if you have any comments or questions.

Search for a paper

Currently there are 54 slide rule related articles to choose from.


Tip: separate keywords (implict AND) by a space or a comma and if needed, limit the search by adding keywords proceeded by a hyphen: e.g. -JOS.

Or: Browse all papers